/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import type * as Common from '../../core/common/common.js';

import progressIndicatorStyles from './progressIndicator.css.js';
import {createShadowRootWithCoreStyles} from './UIUtils.js';

export class ProgressIndicator implements Common.Progress.Progress {
  element: HTMLDivElement;
  private readonly shadowRoot: ShadowRoot;
  private readonly contentElement: Element;
  private labelElement: Element;
  private progressElement: HTMLProgressElement;
  private readonly stopButton?: Element;
  private isCanceledInternal: boolean;
  private worked: number;
  private isDone?: boolean;

  constructor(options = {showStopButton: true}) {
    this.element = document.createElement('div');
    this.element.classList.add('progress-indicator');
    this.shadowRoot = createShadowRootWithCoreStyles(this.element, {cssFile: progressIndicatorStyles});
    this.contentElement = this.shadowRoot.createChild('div', 'progress-indicator-shadow-container');

    this.labelElement = this.contentElement.createChild('div', 'title');
    this.progressElement = this.contentElement.createChild('progress');
    this.progressElement.value = 0;

    if (options.showStopButton) {
      this.stopButton = this.contentElement.createChild('button', 'progress-indicator-shadow-stop-button');
      this.stopButton.addEventListener('click', this.cancel.bind(this));
    }

    this.isCanceledInternal = false;
    this.worked = 0;
  }

  show(parent: Element): void {
    parent.appendChild(this.element);
  }

  done(): void {
    if (this.isDone) {
      return;
    }
    this.isDone = true;
    this.element.remove();
  }

  cancel(): void {
    this.isCanceledInternal = true;
  }

  isCanceled(): boolean {
    return this.isCanceledInternal;
  }

  setTitle(title: string): void {
    this.labelElement.textContent = title;
  }

  setTotalWork(totalWork: number): void {
    this.progressElement.max = totalWork;
  }

  setWorked(worked: number, title?: string): void {
    this.worked = worked;
    this.progressElement.value = worked;
    if (title) {
      this.setTitle(title);
    }
  }

  incrementWorked(worked?: number): void {
    this.setWorked(this.worked + (worked || 1));
  }
}